条件状语从句65185.ppt
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Adverbial Clause of Condition条件状语从句条件状语从句 If you are happyIf you are happy and you know it clap your hands If you are happy and you know it clap your handsIf you are happy and you know it never be afraid to show itIf you are happy and you know it clap your handsIf you are happy and you know it stomp your feet.If you are happy and you know it stomp your feet.If you are happy and you know it never be afraid to show itIf you are happy and you know it stomp your feetIf you are happy and you know it wink your eyeIf you are happy and you know it wink your eyeIf you are happy and you know it never be afraid to show itIf you are happy and you know it wink your eye If you are happy, what will you do? If I am happy, I will smile. If you become sad, what will you do?If I become sad, I will cry. She is doing her homework.If you are hard-working, you will get good grades.She gets good grades. If you play computer games on weekdays ,you’ll be very tired in classyour parents will be sad.you won’t get good grades.your eyes will be poor She will be late.If she _____ to school, she _____ ___late. She is going to walk to school.walkswillbe 位置：从句可放在主句之前或之后，但是放在主句之前须有从句可放在主句之前或之后，但是放在主句之前须有逗号隔开逗号隔开eg:如果我有足够的钱，我就去环游世界If 引导条件状语从句 定义：定义：if “如果如果, 假如假如” 它引导的句子表示某事发生所需的它引导的句子表示某事发生所需的条件，即条件，即“在在…条件下，某事才能发生条件下，某事才能发生”，在句子中充当状语，，在句子中充当状语，因此称之为条件状语从句。
因此称之为条件状语从句 If引导的条件状语从句表示假引导的条件状语从句表示假如有从句的动作发生，就会有主句动作的发生如有从句的动作发生，就会有主句动作的发生 ））If I have enough money, I will travel around the world =I will travel around the world if I have enough money If条件句：条件句用于陈述语气，表示假设的情况可能发生，其中 if 是“如果”的意思 主句主句一般将来时一般将来时 ，从句用一般现在时从句用一般现在时 构 成条件从句主 句时 态If＋一般现在时主语＋shall/will+动词原形例 句If he comes,he will take us to the zoo. 用法：1. 如果主句是一般将来时，从句则用一般现在时如果主句是一般将来时，从句则用一般现在时 If it rains（从句）， I will stay at home. I’ll go with you if you don’t want to go alone（从句）. 2.如果主句含有如果主句含有must, may, can 等情态动词，从句也要用等情态动词，从句也要用一般现在时。
一般现在时 If you drive too fast, you may have an accident. You must stop if the traffic is red. If you finish the homework，， you can go home．． 如果你作业做完了就可以回家了如果你作业做完了就可以回家了 If you want to lose weight you must/should eat less bread. 如果你想减肥，你必须少吃面包如果你想减肥，你必须少吃面包 •3. 如果主句是祈使句，从句同如果主句是祈使句，从句同样要用一要用一般般现在在时Don’t go and play football if you don’t finish your homework.Please call me if he comes next Sunday. 1. 如果主句是一般将来时，从句则用一般现在时如果主句是一般将来时，从句则用一般现在时 If it rains（从句），（从句）， I will stay at home. I’ll go with you if you don’t want to go alone（从句）（从句）. 2.如果主句含有如果主句含有must, may, can 等情态动词，从句也要用等情态动词，从句也要用一般现在时。
一般现在时 If you drive too fast, you may have an accident. You must stop if the traffic is red.3. 如果主句是祈使句，从句同样要用一般现在时如果主句是祈使句，从句同样要用一般现在时 Don’t go and play football if you don’t finish your homework. Please call me if he comes next Sunday. if条件状语从句结构及时态条件状语从句结构及时态Revision 练一练：1如果她早点儿起床，就有时间在家里吃早餐 If she____ ____a little earlier, she’ll have time to eat breakfast at home.2如果你参加聚会，你将会过得很开心If you____ the party ,you_____ ____ a great time.3如果明天下雨，我们将不去野餐If it ____tomorrow, we ___ ____ for a picnic.4。
如果你经常听英文歌，你将会喜欢英语If you often ____ ___English songs, you___ ___English.gets upjoin will haverains won’t golisten to will like 1.If he____________ (not, do it ), I___________(do) it.2.If you ____ (be) late for school ,my teacher ________(be) angry.arewill be3 If she________ (win) the prize ,we _______(be) happy.winswill be4.If I _________ (not,eat )so much ,I _________(get) thinner.5.If you ______(tell) them, they _____________ (not,believe) you.don’t eatwill gettellwon’t believe6 I _________(stay) at home,If it __________( rain).7.If it ____________(not,rain) ,I _________( go) out.8. we __________(play) football, If it is _________(sun) .9.If she __________(become) a star ,her parents ____________ (not,send) her away 10.He _________(watch) TV ,if he ______(be) free.will stayrainsdoesn’t rainwill gowill playsunnybecomeswon’t sendwill watchisdoesn’t dowill do 2.You may ______ (pass) the exam if you ___ (study) hard. rainswill stay passstudy 3. If you want to record, ________(press) the red light.press1.If It______ (rain) tomorrow, I ______(stay) at home.Fill in the blankets with the proper form 1.I’m sure if he _____(go) to the party, he________ (have) a great time.2.If the rain _______(stop) tonight, we will go to the cinema.3.I’ll buy a computer if I ______(have) enough money.4.You _________(not get) nervous if you _____(do ) enough exercise.6.I want to know if he _________(come) tomorrow, if he _______(come), I __________(give) the massage to him. goes will have stopshave won’t getdo comes will come will give If I’m ill,__________________. I will see a doctorLook and sayIf I’m late,_________________.I will say sorry If I’m hungry,I will______________. If I’m tired, I will_____________. Look and sayeat some foodhave a rest If it rains tomorrow,I_____________________.will watch TV at homeIf it _____________ tomorrow,________________.I’ll play basketballdoesn’t rainI won’t________________.play basketball If you are free this weekend,what will you do ?If I am free ,…sleepwatch TVplay computer gamespractice If you want to get good marks,do what? Don’t do what?•If you want to get good marks, __________.•If you want to get good marks,•don’t __________. study hard listen to teachers carefully. do homework by yourself. copy your homework. talk in the class cheat in the exams If you have enough pocket money, what will you buy?•If I have enough pocket money, •I ____________________. If you invite foreigners to China, where will you go? •I will go to _________, •if I invite foreigners to China.Mount TaiWest lake Hainan Game RulesTopic 1: If I am happy, ……A: If I am happy, I will go shopping.B: If I go shopping, I can buy some clothes.C: If I can buy some clothes, I will spend much money.D: If I spend much money, ……E: …..【【比一比比一比】】：：一分一分钟内，根据所内，根据所给话题，看同学，看同学们能能接出多少接出多少条件状条件状语从句从句。
注意注意】】在句子接在句子接龙时，主句与从句，主句与从句变换时，要注意，要注意从句从句时态的的变换，从句用一般，从句用一般现在在时 •If 条件句的替代形式：条件句的替代形式：• （（1））祈使句祈使句 + and/or + 陈述句述句（（谓语动词通常用将来通常用将来时态）其中，中，and表示句意表示句意顺承；承；or表示表示转折，意折，意为“否否则”•e.g. If you work hard, you’ll pass the exam easily. •= Work hard, and you’ll pass the exam easily.•If you don’t work hard, you’ll fall behind others. •= Work hard, or you’ll fall behind others. （（2）用介词）用介词with, without的替代形的替代形式：式： e.g. If there is no water, the fish may die. = Fish may die without water. If you help me, I’ll finish my task on time. =With your help, I’ll finish my task on time. Activity 1 Rewrite the sentences with if:Listen in class, or you won’t understand what to do.If you don’t listen in class, you won’t understand what to do.1) Eat breakfast, or you’ll get hungry at school.2) Hurry up! We’ll be late!If you don’t eat breakfast, you’ll get hungry at school.If you don’t hurry up, we’ll be late. Activity2.Complete the sentences— I want to get high scores.— If __________________________(work hard/ do well)you work hard, you will do well.1.-how can I remember my friends’ birthdays? -If_______________________________________ (keep a note in your diary / not forget).2.-It’s late, but I don’t want to go to sleep. -If _______________________________________ (not get enough sleep/ feel tired at school).you keep a note in your diary, you won’t forget.you don’t get enough sleep, you’ll feel tired at school. If 在宾语从句中翻译为在宾语从句中翻译为“是否是否”If 在条件状语从句中翻译为在条件状语从句中翻译为“如果如果”I’ll go to see you if I am free next week. I want to know if he is a teacher.whether1. if 在句中的含义不同在句中的含义不同 2. if 在从句中的位置不同在从句中的位置不同If 引导的宾语从句放在主句之后；而引导的宾语从句放在主句之后；而if引引导的状语从句可放在主句之前也可放在主导的状语从句可放在主句之前也可放在主句之后句之后= If it doesn’t rain, I will go out tomorrow.I will go out tomorrow if it doesn’t rain.I don’t know if the train has arrived. If 引导的条件状语从句放于句首时多用逗号隔开；引导的条件状语从句放于句首时多用逗号隔开；而而if引导的宾语从句则不能。
引导的宾语从句则不能 3. 时态要求上有区要求上有区别If 引导条件状语从句的时态为一般现在时引导条件状语从句的时态为一般现在时 记住记住“主将从现主将从现” 1.I want to know if there a sports meeting next month.doesn’t rainwill be2.If it doesn’t rain ,we’ll go outIf 引导的宾语从句的时态由主句及本身时引导的宾语从句的时态由主句及本身时态决定；态决定； 1. Can you tell me if she can come to the meeting ?2. She will not go there if it is rainy tomorrow.3. I can’t guess if she will be angry .4. If we help each other , we will get good results . 1 If I _______________(not understand）, I will ask my teacher for help .2If I __________(copy ) your homework , I will cheat myself .3 If she _______________(not get ) up early , she’ll miss the early bus .4 If your mother_______ (buy) the book for you , it will be good for your study. don’t understand copy doesn’t get buys 5. If you ____________(not work ) hard , you _________(not pass) the exam.6. If your brother ____________(break) the window , he will feel very sorry for that .7. If the computer (not work), mend it please .don’t workwon’t passbreaksdoesn’t work 8. If she _______(not be) interested in math, she will find it very boring .9. If you _________(get ) high scores, your parents will be proud of you .10. If you _________(be) happy , we will be happy .isn’t getare . I want to know if he _______(come)tomorrow, if he _______(come), I __________(give) the message to him. comes will come will give if的用法的用法2.引导条件状语从句：引导条件状语从句：译为译为“如果，假如如果，假如”(1) if从句从句+祈使句祈使句(2) if从句从句+主句（一般将来时）主句（一般将来时）(3) if从句从句+主句（含有情态动词）主句（含有情态动词） 1.引导宾语从句引导宾语从句：译为：译为“是否是否”，表示不确定的概，表示不确定的概念。
念I don’t know if your father can come together . Can you tell me if miss your parents ? HomeworkWriting：任：任选一个一个话题，写一，写一篇小文章篇小文章要求：不少于字数要求：不少于字数60词；； 尽可能多地用条件状尽可能多地用条件状语从从句来表达句来表达 If you are happyIf you are happy and you know it clap your hands If you are happy and you know it clap your handsIf you are happy and you know it never be afraid to show itIf you are happy and you know it clap your handsIf you are happy and you know it stomp your feet.If you are happy and you know it stomp your feet.If you are happy and you know it never be afraid to show itIf you are happy and you know it stomp your feetIf you are happy and you know it wink your eyeIf you are happy and you know it wink your eyeIf you are happy and you know it never be afraid to show itIf you are happy and you know it wink your eye 1.If you _____ to the party, you’ll have a great time. A. will go B. went C. go D. going2． I ____ her the answer if she ____me. A.can tell, will ask B. will tell, will ask C. would tell, ask D. will tell, asksCD3. – What are you going to do tomorrow? --We’ll go to the library tomorrow if it ___. A. isn’t rain B. rain C. won’t rain D. doesn’t rain4. What will you do if you _____ to the old folk’s home visit? A. go B. went C.going D. will goAD 5. If I eat ____ food, I’ll be very fat. A. too many B. many too C. too much D. much too6. I’ll give the book to him if he ___ here next Sunday. A. will come B. comes C. is coming D. came 7. There ____an English film in our school tomorrow. A. is going to have B. will have C. is going to be D. has8. Could you tell us where ____？？ A. will the next Olympic Games held B. the next Olympic Games will be held C. would the next Olympic Games be held D. the next Olympic Games would be heldCCBB 。
